It is accepted by everyone that knowledge is the most valuable _______ for human beings. A. standard...
2022-10-26 22:58:10 115次 江苏省苏州市2018年中考英语语法专题练习2《名词》 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
It is accepted by everyone that knowledge is the most valuable _______ for human beings.
A. standard B. treasure C. invention D. instruction
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